Thank you I was about to get mad at my tailor maker

where must a trouser reach at leg bottom when sitting down?

Please don't give advice when you have no clue about black tie or fit in general. 1. Tapering tuxedo trousers so that they look like sweatpants look awful and will cause more wear and tear to the trousers over time. 2. Flap pockets on a tuxedo jacket is wrong, they should always be jetted. 3. A tuxedo jacket should never have notch-lapels. Only peak-lapels and a shawl-collar is acceptable. 4. Two closing-buttons on a single-breasted jacket is wrong, it should have one button only. 5. The jacket is 1.5 inches too short, it should always cover you seat and not split it in half. 6. Patent shoes should never have derby/open lacing, they should have a closed lacing system (oxford lacing) when wearing laced shoes with a tuxedo. 7. The highly visible twill weave on the front of the shirt is a good indicator that this is not a proper tuxedo shirt. 8. When wearing a single-breasted jacket, you must wear an evening waistcoat or a cummerbund to hide the waistband of the trousers. This is especially important in this case to hide the fact that you use clip-on suspenders. 9. Having what looks like a single-vent on a dinner jacket is completely wrong and too casual, it should have no vents. "Specializing" in tuxedos, and making literally every mistake when it comes to the fundamentals is pretty embarrassing.